Boiler

High-Efficiency Condensing and Combi Boilers That Save Space and Fuel

Floor-standing and combi boilers from Navien, Bosch and Rinnai, installed by TSSA-licensed technicians across Toronto, York and Durham.

Boiler replacement before and after: old water heater tank replaced with a wall-mounted high-efficiency unit

Boiler & Combi Boiler Installation in Toronto & the GTA

Empower Home Comfort replaces and installs high-efficiency condensing boilers and combi boilers from Navien, Bosch and Rinnai across Toronto, York Region and Durham Region. We size the new boiler to your home’s heat loss, match it to your radiators or in-floor heating, and handle the gas, venting and permits with TSSA-licensed technicians. Most installations cost $5,600 to $12,000, and you can buy, finance or rent. Call 1-800-375-8984.

Replacing an older boiler? Whether you rent or own your current unit, we’ll help you choose the right system for your home and budget, looking at your heating needs, your hot water use and the pipes and radiators you already have.

We install and service Bosch, Navien and Rinnai boilers, and our technicians work on almost every make and model of boiler found in GTA homes. If your boiler isn’t holding temperature or is leaking and you need a fix rather than a new system, see our boiler repair service.

Your Boiler Options

Floor Stand Boiler

A floor-standing boiler is one of the most common heating systems in older Toronto homes. It heats water and sends hot water (or steam, in steam systems) through pipes to radiators or in-floor tubing. It’s the right fit for homes heated by:

  • Steam radiators
  • Hot water radiators
  • Hydronic radiant floor heating
Floor stand boiler replacement before and after: low-efficiency boiler replaced with a 96% efficiency floor stand boiler
Second floor stand boiler replacement: low-efficiency boiler replaced with a 96% efficiency floor stand boiler

Combi Boiler

As the name suggests, combi-boilers combine the work of two major appliances into one: the boiler and the water heater.

These units draw cold water in directly from the mains as needed and heat it on-demand, so there’s no need for a storage tank. Once the water is heated, it is either pumped through the boiler system to heat your home or distributed to the faucets and water lines as needed to provide your kitchen, bathroom, utility, and laundry rooms with hot water.

Combi boiler is ideal for smaller properties like townhouses, condos or apartments heating by:

  • Air Handlers
  • Low velocity  systems
  • High velocity systems
  • Hot Water Radiators
Combi boiler installation before and after: tank-style combi replaced with a high-efficiency tankless combi boiler
Combi boiler replacement before and after: mid-efficiency combi replaced with a high-efficiency tankless combi boiler

Combi Boiler or Boiler With a Separate Water Heater?

Combi boilerHeat-only boiler + water heater
AppliancesOne wall-hung unit for heat and hot waterA boiler plus a hot water tank, indirect tank or tankless heater
SpaceSmallest footprint, no storage tankNeeds room for two appliances
Hot waterOn demand, like a tankless water heater; best for one or two showers at a timeStored or high-output hot water; better for several showers at once
Best fitTownhouses, condos, smaller and mid-size homesLarger homes, multiple bathrooms, high hot water use
Heating systemsHot water radiators, in-floor heating, hydronic air handlersHot water radiators, in-floor heating, steam (with a steam boiler)
Installed costMost boiler and combi boiler installations in the GTA cost $5,600 to $12,000, depending on the unit and the work your system needs.

Signs It's Time to Replace Your Boiler

  • The boiler is 15 to 20 years old or more and needing repairs more often.
  • Rooms heat unevenly or the boiler struggles to hold temperature on cold days.
  • Leaks from the boiler body or heat exchanger, or visible rust and corrosion.
  • Pressure keeps dropping, or the relief valve keeps discharging.
  • Parts for your model are hard to get, or a repair quote is a large share of the cost of a new boiler.

Not sure if it's time? We'll tell you honestly whether a boiler repair or a replacement makes more sense.

What's Involved in a Boiler Installation or Replacement

  • Heat loss sizing: a new boiler is sized to your home's heat loss, not just the size of the old one. Older boilers are often oversized, which wastes fuel.
  • Condensing vs. non-condensing: high-efficiency condensing boilers save the most when return water is cool enough to condense (below about 54°C), which suits in-floor heating and well-sized radiators. Steam systems need a steam boiler, which is non-condensing.
  • Venting and condensate: condensing boilers vent through plastic pipe, usually out a side wall, and need a condensate drain.
  • System protection: when a new boiler goes onto an old system, flushing the piping and adding a dirt or magnetic separator protects the new heat exchanger.
  • Licensed gas work: in Ontario, gas boiler installation must be done by a TSSA-registered contractor with licensed gas technicians. Empower is TSSA registered.

Once installed, an annual service keeps a boiler running safely and efficiently. It's included in our maintenance plans.

Technician servicing a wall-mounted gas water heater

Buying Or Renting? What Is Best For You?

Empower Home Comfort delivers expert service and value, backed by years of experience. Our consultants work with your budget to recommend the right system, offering premium solutions with peace of mind through our service and maintenance package. Call 1-800-375-8984 to book your consultation today.

Boiler Installation FAQ

How much does a new boiler cost in Toronto?

Most boiler and combi boiler installations in the GTA cost $5,600 to $12,000 installed. Where your home lands in that range depends on the type and size of boiler, whether it is a combi or heat-only unit, the venting and condensate work, any piping changes, and flushing or protecting an older system. You get a written quote before any work begins, and financing and rental options are available.

How long does a boiler last?

A well-maintained cast-iron boiler can last 20 to 30 years or more. Modern high-efficiency condensing boilers and combi boilers typically last 15 to 20 years with annual service. Frequent repairs, leaks or trouble holding temperature are signs a boiler is near the end of its life.

Should I get a combi boiler or a boiler with a separate water heater?

A combi boiler makes sense for townhouses, condos and smaller or mid-size homes where one or two showers run at a time and space is tight. Larger homes with several bathrooms usually do better with a heat-only boiler paired with an indirect tank or a high-output water heater. We'll recommend the right setup after looking at your home and hot water use.

Can a combi boiler supply enough hot water for my home?

A combi boiler heats water on demand, the same way a tankless water heater does. In a Toronto winter, when incoming water is very cold, most combi boilers comfortably handle one or two fixtures at a time. If your household often runs three or more showers at once, a separate water heater is usually the better choice.

Can I replace a steam boiler with a high-efficiency condensing boiler?

Not directly. Steam radiator systems need a steam boiler, which is non-condensing. To use a condensing boiler, the system has to be converted to hot water, which usually means changing piping and sometimes radiators. We'll explain both options and the costs before you decide.

Can I rent a boiler instead of buying one?

Yes. You can buy, finance or rent a boiler or combi boiler from Empower. Renting means no upfront cost and predictable monthly payments, with service and repairs covered under the rental. Call 1-800-375-8984 to compare options.

Are there rebates for gas boilers in Ontario?

As of fall 2026, Ontario's Home Renovation Savings program does not offer rebates for natural gas boilers or combi boilers. Its heating rebates are for heat pumps and smart thermostats. Program rules change, so check Save on Energy's Home Renovation Savings page or ask us what currently qualifies.

Does a boiler need annual maintenance?

Yes. An annual service checks combustion and venting, cleans the burner and heat exchanger, clears the condensate trap on condensing models, and checks system pressure, the expansion tank and safety controls. It keeps the boiler efficient and catches small problems before they become no-heat calls.

🛡️ Warranty

With Empower, you don’t just get industry-leading products — you also get dependable warranty coverage to protect your investment.

Optional labour warranties may also be available, depending on seasonal promotions. For full details, check the product documentation provided with your system.

🔧 Maintenance & Protection Plan

Your furnace, AC, or water heater needs regular preventative maintenance to run efficiently. Empower offers customized protection plans, seasonal tune-ups, and inspections to reduce downtime and keep your systems running smoothly.

Every visit is handled by a factory-trained, certified technician — delivering high-quality service and on-time appointments you can count on.

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Tankless Water Heater

✔ Endless supply of instant hot water.
✔ No storage tank saves valuable space.
✔ Ultra efficient with UEF up to 0.96

Water Filtration and Softener

✔ Filtration extends the life of your washing machine, water heater, dishwasher and more.
✔ Enjoy healthy, great-tasting, and odor-free water from every tap.

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